/**
 * Created by PanJiaChen on 16/11/18.
 */

/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
  if (arguments.length === 0 || !time) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if ((typeof time === 'string')) {
      if ((/^[0-9]+$/.test(time))) {
        // support "1548221490638"
        time = parseInt(time)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), '/')
      }
    }

    if ((typeof time === 'number') && (time.toString().length === 10)) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
    return value.toString().padStart(2, '0')
  })
  return time_str
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (('' + time).length === 10) {
    time = parseInt(time) * 1000
  } else {
    time = +time
  }
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return (
      d.getMonth() +
      1 +
      '月' +
      d.getDate() +
      '日' +
      d.getHours() +
      '时' +
      d.getMinutes() +
      '分'
    )
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
  if (!search) {
    return {}
  }
  const obj = {}
  const searchArr = search.split('&')
  searchArr.forEach(v => {
    const index = v.indexOf('=')
    if (index !== -1) {
      const name = v.substring(0, index)
      const val = v.substring(index + 1, v.length)
      obj[name] = val
    }
  })
  return obj
}

/**
 * @param {Function} func
 * @param {number} wait
 * @param {boolean} immediate
 * @return {*}
 */
export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function() {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function(...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 * @param {Object} source
 * @returns {Object}
 */
export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'deepClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach(keys => {
    if (source[keys] && typeof source[keys] === 'object') {
      targetObj[keys] = deepClone(source[keys])
    } else {
      targetObj[keys] = source[keys]
    }
  })
  return targetObj
}

/**
 * 对字符串进行md5加密
 * @param {string} string
 * * @returns {string}
*/
export function md5(string){
  function md5_RotateLeft(lValue, iShiftBits) {
    return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
  }
  function md5_AddUnsigned(lX,lY){
    var lX4,lY4,lX8,lY8,lResult;
    lX8 = (lX & 0x80000000);
    lY8 = (lY & 0x80000000);
    lX4 = (lX & 0x40000000);
    lY4 = (lY & 0x40000000);
    lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
    if (lX4 & lY4) {
      return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
    }
    if (lX4 | lY4) {
      if (lResult & 0x40000000) {
        return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
      } else {
        return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
      }
    } else {
      return (lResult ^ lX8 ^ lY8);
    }
  }	 
  function md5_F(x,y,z){
    return (x & y) | ((~x) & z);
  }
  function md5_G(x,y,z){
    return (x & z) | (y & (~z));
  }
  function md5_H(x,y,z){
    return (x ^ y ^ z);
  }
  function md5_I(x,y,z){
    return (y ^ (x | (~z)));
  }
  function md5_FF(a,b,c,d,x,s,ac){
    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_F(b, c, d), x), ac));
    return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  }; 
  function md5_GG(a,b,c,d,x,s,ac){
    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_G(b, c, d), x), ac));
    return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  };
  function md5_HH(a,b,c,d,x,s,ac){
    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_H(b, c, d), x), ac));
    return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  }; 
  function md5_II(a,b,c,d,x,s,ac){
    a = md5_AddUnsigned(a, md5_AddUnsigned(md5_AddUnsigned(md5_I(b, c, d), x), ac));
    return md5_AddUnsigned(md5_RotateLeft(a, s), b);
  };
  function md5_ConvertToWordArray(string) {
    var lWordCount;
    var lMessageLength = string.length;
    var lNumberOfWords_temp1=lMessageLength + 8;
    var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
    var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
    var lWordArray=Array(lNumberOfWords-1);
    var lBytePosition = 0;
    var lByteCount = 0;
    while ( lByteCount < lMessageLength ) {
      lWordCount = (lByteCount-(lByteCount % 4))/4;
      lBytePosition = (lByteCount % 4)*8;
      lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
      lByteCount++;
    }
    lWordCount = (lByteCount-(lByteCount % 4))/4;
    lBytePosition = (lByteCount % 4)*8;
    lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
    lWordArray[lNumberOfWords-2] = lMessageLength<<3;
    lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
    return lWordArray;
  }; 
  function md5_WordToHex(lValue){
    var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
    for(lCount = 0;lCount<=3;lCount++){
      lByte = (lValue>>>(lCount*8)) & 255;
      WordToHexValue_temp = "0" + lByte.toString(16);
      WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
    }
    return WordToHexValue;
  };
  function md5_Utf8Encode(string){
    string = string.replace(/\r\n/g,"\n");
    var utftext = ""; 
    for (var n = 0; n < string.length; n++) {
      var c = string.charCodeAt(n); 
      if (c < 128) {
        utftext += String.fromCharCode(c);
      }else if((c > 127) && (c < 2048)) {
        utftext += String.fromCharCode((c >> 6) | 192);
        utftext += String.fromCharCode((c & 63) | 128);
      } else {
        utftext += String.fromCharCode((c >> 12) | 224);
        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
        utftext += String.fromCharCode((c & 63) | 128);
      } 
    } 
    return utftext;
  }; 
  var x=Array();
  var k,AA,BB,CC,DD,a,b,c,d;
  var S11=7, S12=12, S13=17, S14=22;
  var S21=5, S22=9 , S23=14, S24=20;
  var S31=4, S32=11, S33=16, S34=23;
  var S41=6, S42=10, S43=15, S44=21;
  string = md5_Utf8Encode(string);
  x = md5_ConvertToWordArray(string); 
  a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; 
  for (k=0;k<x.length;k+=16) {
    AA=a; BB=b; CC=c; DD=d;
    a=md5_FF(a,b,c,d,x[k+0], S11,0xD76AA478);
    d=md5_FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
    c=md5_FF(c,d,a,b,x[k+2], S13,0x242070DB);
    b=md5_FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
    a=md5_FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
    d=md5_FF(d,a,b,c,x[k+5], S12,0x4787C62A);
    c=md5_FF(c,d,a,b,x[k+6], S13,0xA8304613);
    b=md5_FF(b,c,d,a,x[k+7], S14,0xFD469501);
    a=md5_FF(a,b,c,d,x[k+8], S11,0x698098D8);
    d=md5_FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
    c=md5_FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
    b=md5_FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
    a=md5_FF(a,b,c,d,x[k+12],S11,0x6B901122);
    d=md5_FF(d,a,b,c,x[k+13],S12,0xFD987193);
    c=md5_FF(c,d,a,b,x[k+14],S13,0xA679438E);
    b=md5_FF(b,c,d,a,x[k+15],S14,0x49B40821);
    a=md5_GG(a,b,c,d,x[k+1], S21,0xF61E2562);
    d=md5_GG(d,a,b,c,x[k+6], S22,0xC040B340);
    c=md5_GG(c,d,a,b,x[k+11],S23,0x265E5A51);
    b=md5_GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
    a=md5_GG(a,b,c,d,x[k+5], S21,0xD62F105D);
    d=md5_GG(d,a,b,c,x[k+10],S22,0x2441453);
    c=md5_GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
    b=md5_GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
    a=md5_GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
    d=md5_GG(d,a,b,c,x[k+14],S22,0xC33707D6);
    c=md5_GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
    b=md5_GG(b,c,d,a,x[k+8], S24,0x455A14ED);
    a=md5_GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
    d=md5_GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
    c=md5_GG(c,d,a,b,x[k+7], S23,0x676F02D9);
    b=md5_GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
    a=md5_HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
    d=md5_HH(d,a,b,c,x[k+8], S32,0x8771F681);
    c=md5_HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
    b=md5_HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
    a=md5_HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
    d=md5_HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
    c=md5_HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
    b=md5_HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
    a=md5_HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
    d=md5_HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
    c=md5_HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
    b=md5_HH(b,c,d,a,x[k+6], S34,0x4881D05);
    a=md5_HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
    d=md5_HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
    c=md5_HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
    b=md5_HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
    a=md5_II(a,b,c,d,x[k+0], S41,0xF4292244);
    d=md5_II(d,a,b,c,x[k+7], S42,0x432AFF97);
    c=md5_II(c,d,a,b,x[k+14],S43,0xAB9423A7);
    b=md5_II(b,c,d,a,x[k+5], S44,0xFC93A039);
    a=md5_II(a,b,c,d,x[k+12],S41,0x655B59C3);
    d=md5_II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
    c=md5_II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
    b=md5_II(b,c,d,a,x[k+1], S44,0x85845DD1);
    a=md5_II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
    d=md5_II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
    c=md5_II(c,d,a,b,x[k+6], S43,0xA3014314);
    b=md5_II(b,c,d,a,x[k+13],S44,0x4E0811A1);
    a=md5_II(a,b,c,d,x[k+4], S41,0xF7537E82);
    d=md5_II(d,a,b,c,x[k+11],S42,0xBD3AF235);
    c=md5_II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
    b=md5_II(b,c,d,a,x[k+9], S44,0xEB86D391);
    a=md5_AddUnsigned(a,AA);
    b=md5_AddUnsigned(b,BB);
    c=md5_AddUnsigned(c,CC);
    d=md5_AddUnsigned(d,DD);
  }
return (md5_WordToHex(a)+md5_WordToHex(b)+md5_WordToHex(c)+md5_WordToHex(d)).toLowerCase();
}